Astrophysical: Stellar rotation

  • Publication
    A 4 Gyr M-dwarf Gyrochrone from CFHT/MegaPrime Monitoring of the Open Cluster M67

    We present stellar rotation periods for late K- and early M-dwarf members of the 4 Gyr old open cluster M67 as calibrators for gyrochronology and tests of...

  • Publication
    A model for constructing artificial integrated spectral lines and their Fourier transform properties relevant to the search for differential rotation of stars

    A model is given for constructing artificial integrated spectral lines which allows the inclusion of all effects relevant to the synthesis of these lines by...

  • Publication
    A theoretical interpretation of the Delta Scuti-like pulsation of the star 63 Herculis

    Theoretical pulsation frequencies derived from a typical model computation are used to identify the periods during which the Delta Scuti star 63 Herculis...

  • Publication
    Blue stragglers and the binary hypothesis

    An observational test of the binary hypothesis for the origin of blue straggler stars is conducted by searching for radial velocity variables among 30 blue...

  • Publication
    Brightness Fluctuation Spectra of Sun-like Stars. I. The Mid-frequency Continuum

    We analyze space-based time-series photometry of Sun-like stars, mostly in the Pleiades, but also field stars and the Sun itself. We focus on timescales between...

  • Publication
    Chemical Evolution in the Milky Way: Rotation-based Ages for APOGEE-Kepler Cool Dwarf Stars

    We use models of stellar angular momentum evolution to determine ages for ∼500 stars in the APOGEE-Kepler Cool Dwarfs sample. We focus on lower-main-sequence...

  • Publication
    Core─Envelope Coupling in Intermediate-mass Core-helium Burning Stars

    Stars between two and three solar masses rotate rapidly on the main sequence, and the detection of slow core and surface rotation in the core-helium burning...

  • Publication
    Dynamics of dust around a rotating star

    The orbital evolution of dust particles initially located outside the equatorial plane is considered. The averaging method is used to solve equations of motion...

  • Publication
    Extracting rotation rates on 27-d TESS-like light curves downgrading Kepler data

    Evolution of surface magnetic features in the star, such as stellar spots or faculae, can leave a signature in the lightcurves. These features allow us to study...